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Finding the Fourth Proportional to 161,975.71, 223,542.01 and 90,362.40

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Solution

The fourth proportional to 161,975.71, 223,542.01 and 90,362.40 is: 124,708.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,975.71 : 223,542.01 = 90,362.40 : x
  2. Step 2: Convert to fraction form
    161,975.71/223,542.01 = 90,362.40/x
  3. Step 3: Cross multiply
    161,975.71x = 223,542.01 × 90,362.40
  4. Step 4: Simplify right side
    161,975.71x = 20,199,792,524.42
  5. Step 5: Solve for x
    x = 20,199,792,524.42/161,975.71
  6. Step 6: Final answer
    x = 124,708.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.